Current solar cell industry, the mainstream technology for crystalline silicon solar cells, including monocrystalline silicon solar cells and polycrystalline silicon solar cells. After the past few years the development of solar cell industry, its efficiency has been greatly improved, costs dropped significantly. At present a large-scale production of monocrystalline silicon solar cells, the average photoelectric conversion efficiency can be achieved between 16.5 to 17 percent, while the polysilicon solar cells, the average photoelectric conversion efficiency of 15.5%. Of crystalline silicon solar cell industry chain, the main problem is a complex process, therefore, would be the cost of crystalline silicon solar cells a significant reduction would have greater difficulties. In reducing cost, thin-film solar cells gradually showed its competitive edge.
At present, from a technical perspective, the most mature course ought to silicon-based thin-film solar cell thin-film solar cells, including amorphous silicon thin-film solar cells and amorphous silicon / microcrystalline silicon thin-film solar cells stacked pairs, in which amorphous silicon thin-film solar cells 80s in the last century has already begun on a larger scale mass production, but later found that the kinds of batteries there is the phenomenon of light-induced recession, and its efficiency slowly, so in the last century, 90 years to expand production of crystalline silicon solar cells of , the amorphous silicon thin film solar cells constitute a growing portion of production low. Until recently, solar power market continues to expand, and the resulting worsening shortage of silicon materials, makes it stepped up its silicon-based thin-film solar cell research and development. People’s main objective is to increase efficiency, improve stability, reduce manufacturing costs, the basic technology is the use of PECVD .
